基于可饱和吸收体MoS_2的固态Tm…YAG被动调Q激光器  

Passively Q-Switched Solid-State Tm…YAG Laser with MoS_2 as Saturable Absorber

作　　者：高攀 黄见洪[1] 刘华刚[1] 翁文[1] 戴殊韬[1,2] 林文雄 Gao Pan1,2, Huang Jianhong1, Liu Huagang1, Weng Wen1, Dai Shutao1,2, Lin Wenxiong1(1.Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002;2.University of Chinese Academy of Sciences, Beijing 100049, Chin)

机构地区：[1]中国科学院福建物质结构研究所光电材料化学与物理重点实验室,福建福州350002 [2]中国科学院大学,北京100049

出　　处：《中国激光》2018年第7期8-12,共5页Chinese Journal of Lasers

基　　金：国家重点研发计划(2017YFB1104500)

摘　　要：报道了一种以二维材料MoS_2作为可饱和吸收体的全固态Tm…YAG被动调Q激光器。该激光器以785 nm窄线宽半导体激光器作为抽运源,采用平平腔设计,以MoS_2纳米片作为可饱和吸收体,实现了2μm波段的被动调Q运转。在吸收抽运功率达到2.02 W时,获得了最大平均输出功率为421 m W、最小脉冲宽度为423 ns、重复频率为49.36 k Hz、最大单脉冲能量为8.53μJ的脉冲激光输出。结果表明,MoS_2是一种可适用于2μm波段固态激光器的可饱和吸收体,为产生近红外波段的脉冲激光提供了一种新的方法。A passively Q-switched solid-state Tm：YAG laser with MoS2 as saturable absorber is reported. In this laser,a785 nm narrow linewidth diode laser is taken as pump source,a plano-plano cavity is used,and MoS2 nanosheets are served as saturable absorber. Passive Q-switching can be achieved successfully in 2 μm wavelength region. When the absorbed pump power is at 2. 02 W,the Q-switched laser pulses are obtained with the maximum average output power of 421 m W,the minimum pulse width of 423 ns,the pulse repetition rate of 49. 36 k Hz and the maximum pulse energy of 8. 53 μJ. The results indicate that MoS2 is a kind of saturable absorber that can be used in solid-state laser in 2 μm wavelength region.Furthermore,it provides a potential way to obtain 2 μm pulse laser.

关 键 词：激光器 被动调Q 固态激光器 可饱和吸收体 MOS2 

分 类 号：TN248.1[电子电信—物理电子学]